【解決】Vagrantで文字エンコードエラーが出た

ある日を境に急にVagrant up時にエラーが吐かれるようになってしまった。
長々と文章書くのもアホらしいので結論を先に書く。
##原因
###VirtualBox上で作成したスナップショットの説明に日本語を書いたのが原因。

この結論になる前に試した事
１．Vagrantファイルに原因があるのかと思って、バイナリエディタで指摘された文字コード探しても見つからなかった。
２．ディレクトリパスに日本語が含まれていないか確認。

スナップショット機能を使ったあたりから発生しだしたので、もしやと思い説明文をとりあえず過去含め全部削除したら普通に動くようになったので間違いないと思う。
心当たりある方は試してみると良いかと。

無事に解決したらイイネしといてくれればこの記事を後々見た人が参考になると思うのでよろしく。

```
Bringing machine 'default' up with 'virtualbox' provider...
==> default: Removing hosts
==> default: No machine id, nothing removed from /etc/hosts
==> default: Importing base box 'new-site.com'...
/opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/util/subprocess.rb:29:in `encode': "\xD8" from ASCII-8BIT to UTF-8 (Encoding::UndefinedConversionError)
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/util/subprocess.rb:29:in `block in initialize'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/util/subprocess.rb:29:in `map'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/util/subprocess.rb:29:in `initialize'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/util/subprocess.rb:22:in `new'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/util/subprocess.rb:22:in `execute'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/plugins/providers/virtualbox/driver/base.rb:404:in `block in raw'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/util/busy.rb:19:in `busy'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/plugins/providers/virtualbox/driver/base.rb:403:in `raw'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/plugins/providers/virtualbox/driver/base.rb:342:in `block in execute'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/util/retryable.rb:17:in `retryable'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/plugins/providers/virtualbox/driver/base.rb:337:in `execute'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/plugins/providers/virtualbox/driver/version_5_0.rb:209:in `import'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/plugins/providers/virtualbox/action/import.rb:15:in `call'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/action/warden.rb:34:in `call'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/plugins/providers/virtualbox/action/customize.rb:40:in `call'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/action/warden.rb:34:in `call'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/plugins/providers/virtualbox/action/check_accessible.rb:18:in `call'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/action/warden.rb:34:in `call'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/action/warden.rb:95:in `block in finalize_action'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/action/warden.rb:34:in `call'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/action/warden.rb:34:in `call'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/action/builder.rb:116:in `call'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/action/runner.rb:66:in `block in run'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/util/busy.rb:19:in `busy'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/action/runner.rb:66:in `run'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/action/builtin/call.rb:53:in `call'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/action/warden.rb:34:in `call'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/action/builtin/config_validate.rb:25:in `call'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/action/warden.rb:34:in `call'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/action/warden.rb:95:in `block in finalize_action'
  6 require 'vagrant/util/io'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/action/warden.rb:34:in `call'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/action/warden.rb:34:in `call'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/action/builtin/handle_box.rb:56:in `call'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/action/warden.rb:34:in `call'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/action/warden.rb:95:in `block in finalize_action'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/action/warden.rb:34:in `call'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/action/warden.rb:34:in `call'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/action/builder.rb:116:in `call'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/action/runner.rb:66:in `block in run'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/util/busy.rb:19:in `busy'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/action/runner.rb:66:in `run'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/action/builtin/call.rb:53:in `call'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/action/warden.rb:34:in `call'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/plugins/providers/virtualbox/action/check_virtualbox.rb:17:in `call'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/action/warden.rb:34:in `call'
    from /Users/[ユーザー名]/.vagrant.d/gems/gems/vagrant-hostsupdater-1.0.1/lib/vagrant-hostsupdater/Action/RemoveHosts.rb:23:in `call'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/action/warden.rb:34:in `call'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/action/builder.rb:116:in `call'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/action/runner.rb:66:in `block in run'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/util/busy.rb:19:in `busy'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/action/runner.rb:66:in `run'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/machine.rb:214:in `action_raw'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/machine.rb:191:in `block in action'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/environment.rb:516:in `lock'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/machine.rb:178:in `call'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/machine.rb:178:in `action'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.7.4/lib/vagrant/batch_action.rb:82:in `block (2 levels) in run'
```